Cheap flights from Knoxville to Portugal from $754
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Portugal departing on 11/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Route
Depart
Return
KnoxvilleLisbon
TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado
TYSLIS
Knoxville McGhee Tyson
Tue 11/3
9:45 am-10:05 am
1 stop19h 20m
Lisbon Humberto Delgado
Tue 12/8
12:50 pm-2:53 pm
2 stops31h 03m
KnoxvilleLisbon
TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado
TYSLIS
Knoxville McGhee Tyson
Tue 11/3
11:20 am-8:10 am
1 stop15h 50m
Lisbon Humberto Delgado
Fri 12/11
11:20 am-5:00 pm
2 stops34h 40m
KnoxvilleLisbon
TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado
TYSLIS
Knoxville McGhee Tyson
Sun 1/3
6:30 am-9:05 am
1 stop21h 35m
Lisbon Humberto Delgado
Thu 1/21
6:30 am-8:54 pm
2 stops19h 24m
KnoxvilleLisbon
TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado
TYSLIS
Knoxville McGhee Tyson
Sun 1/3
6:30 am-9:05 am
1 stop21h 35m
Lisbon Humberto Delgado
Thu 1/21
10:55 am-8:54 pm
1 stop14h 59m
KnoxvilleLisbon
TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado
TYSLIS
Knoxville McGhee Tyson
Wed 11/4
5:45 am-8:55 am
2 stops22h 10m
Lisbon Humberto Delgado
Tue 12/8
12:50 pm-2:53 pm
2 stops31h 03m
KnoxvilleLisbon
TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado
TYSLIS
Knoxville McGhee Tyson
Wed 11/4
6:45 am-8:55 am
2 stops21h 10m
Lisbon Humberto Delgado
Fri 12/11
11:20 am-5:00 pm
2 stops34h 40m
KnoxvilleLisbon
TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado
TYSLIS
Knoxville McGhee Tyson
Wed 11/4
5:45 am-6:55 am
2 stops20h 10m
Lisbon Humberto Delgado
Wed 12/9
5:00 am-8:47 pm
2 stops20h 47m
KnoxvilleLisbon
TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado
TYSLIS
Knoxville McGhee Tyson
Wed 11/4
4:59 pm-5:45 pm
2 stops19h 46m
Lisbon Humberto Delgado
Thu 12/10
10:25 am-8:58 pm
1 stop15h 33m
KnoxvilleLisbon
TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado
TYSLIS
Knoxville McGhee Tyson
Tue 11/3
4:59 pm-9:50 pm
2 stops23h 51m
Lisbon Humberto Delgado
Wed 12/9
11:05 am-8:58 pm
1 stop14h 53m
KnoxvilleLisbon
TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado
TYSLIS
Knoxville McGhee Tyson
Tue 11/3
4:30 pm-8:10 am
1 stop10h 40m
Lisbon Humberto Delgado
Wed 12/9
10:15 am-8:37 pm
1 stop15h 22m
See travel insights to Portugal from
How to get the cheapest flight ticket from Knoxville to Portugal
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Portugal?
The cheapest month to fly to Portugal from Knoxville is in September. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Portugal from Knoxville during January instead. Flights to Portugal in January, while not as cheap as those in September, still average around $527.
Can stopping save me money on Knoxville to Portugal flights?
You could potentially save up to 47% on your flight if you consider stops on a Knoxville to Portugal flight.
Cheap Knoxville to Portugal flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Knoxville to Portugal
Frequently asked questions about flying from Knoxville to Portugal
When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Portugal?
Prices for flights from Knoxville McGhee Tyson Airport to Portugal were last updated today.
How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Portugal?
There are 2 operators available for flights from Knoxville McGhee Tyson Airport to Portugal as of October 2026.
How old do you have to be to fly from Knoxville McGhee Tyson Airport to Portugal?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Portugal.
What documentation or ID do you need to fly to Portugal?
The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from Knoxville to Portugal
Compare and see reviews for airlines that fly from Knoxville to Portugal with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $475 | Free Cancellation | Rating 6.7 8,255 reviews | |||
| PriceFrom $629 | Free Cancellation | Rating 7.4 10,319 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Knoxville to Portugal?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Knoxville to Portugal. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Knoxville to Portugal with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Knoxville to Portugal flights to just show those with flexible booking policies.
How can momondo help me find flights from Knoxville to Portugal?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Portugal from Knoxville.
I’m not ready to book a flight from Knoxville to Portugal right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Knoxville to Portugal flights. All you need is a valid email address and we will do the rest; it is that quick and easy.